Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓
India Curried Onion
Ingredients
Directions
Make the curried onion
In a skillet, melt the butter over medium heat.
Add the sliced onions and salt, and fry until the onions are soft.
Stir in the curry powder and cook for another minute.
Add the eggs and serve
Beat the eggs in a bowl, then add them to the skillet, stirring gently.
Add a few drops of lemon juice and cook until the eggs are set.
Serve hot.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Onion + lemontop 19% of all pairsSmell alikemoderateCooked together15,646 recipes
Shared aroma: decanal (soap, orange peel).
Egg and lemon barely smell alike, yet cooks put them together in 44,316 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Soften and sweeten as they cook, forming the base of the dish.
- Eggs
- Set when heated, binding the onions into a soft, tender mass.
- Butter
- Adds fat for frying and a rich flavour to the onions.
- Curry powder
- Provides the spiced aroma that defines the dish.
The step that matters
Stirring the eggs gently. Eggs set into soft curds when heated; vigorous stirring in a hot pan can break them into fine pieces or make them tough, so gentle stirring keeps them tender.
Swap the onion
How well each one fits the dish's main ingredients (butter, egg, lemon):
- Asparagusfits better
- Shallotfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against butter, egg, lemon. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Lemon Sauce236 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes